The University Medical Center which currently runs a manual system for the management and maintenance of its critical information also operate an Outpatient Department in which non-urgent patients arrives for consultation with the problem of patients‘ long waiting time. This scenario has resulted to certain impediment ion terms of service rendering, including difficulty in accessing data due to improper keeping of patient details; delay in attending to patients on emergency which could lead to case complications as well as death of the patient; Lack of an effective Doctor-Patients appointment coordination; and more so, the few Doctors and Nurses could be overworked. The aim of this research project is to develop an Agent-Based Appointment Management System that will improve the medical center‘s efficiency in health services provision and reduce outpatient waiting time without adding extra resources. With the introduction of appointment system, the result has shown that average waiting time could be reduced by thirty-seven to forthfour percent as compared to the current status. Object Oriented Analysis and Design Methodology (OOAD) were adopted in the design for the Design and development of the proposed system. The proposed system was implemented using PHP, AJAX, HTML programming technologies. MYSQL was used as the database engine in XAMP server. The hospital appointment and scheduling system was tested using several test data by stakeholders and error correction was carried out.